Biology

Mesprit is a small, gray, fairy-like Pokémon. It has two tails that each have a red jewel encrusted in them. These are, presumably, two of the jewels which comprise the Red Chain. Mesprit has a partially magenta face with four long, drooping appendages and another red gem encrusted in its forehead. Mesprit's spirit can leave its body without dying and return to the body at will. Legends say that a person that touches it will have their emotions completely drained away. It was shown in The Needs of the Three! and The Battle Finale of Legend! that it can teleport itself, as well as other Pokémon and humans. Though playful, it is a bit mischievous.

In the Pokémon Battrio: Aim to be Battrio Master manga

In the Pokémon Diamond and Pearl Adventure! manga

Along with Uxie and Azelf, Mesprit was captured by Team Galactic to create the Red Chain so that they can control the legendary Dialga. It was eventually freed and helped stop Dialga by breaking the Red Chain.

In Super Smash Bros. Brawl

On the Spear Pillar stage, occasionally the lake guardians make surprising "cameo" appearances during the fight; they do nothing, however.

Trophy Information

An Emotion Pokémon said to have taught humans emotions. Rumor is, if you touch Mesprit, you'll lose all emotions three days later. It sleeps at the base of Lake Verity, but once engaged in battle, it will rise from the water to fly around the Sinnoh region. Even if you see this Pokémon after your initial meeting, it'll try to flee battle, so catching it is quite a task.

Trivia

In Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness, Mesprit is the only one of the lake trio to fight the main character in battle during the main story; despite being depicted as a calm and peaceful Pokémon, it was enraged by a previous attack on its counterpart Uxie and quite fiercely attacked the hero and their partner.

Mesprit shares its species name with Kirlia. They are both known as the Emotion Pokémon.